Frosted glass windows are perfect for bathrooms, allowing light to pass through while giving you privacy. "Wallpaper for Windows" is a useful window film that you can use to create the frosted glass windows without having to replace or remove your windows. First, you should measure out the size of the window that you plan to cover and clean the glass thoroughly. Also wash your hands to avoid oil getting on the glass. After spraying the window with soapy water, peel the backing off the film and apply it to the wet window. This will allow the film to stick, giving your bathroom windows the perfect balance of light and privacy.